Socket wrench



0. I. WILLIAMS.

SOCKET WRENCH.

` APPLICATION FILED JUNE Il', 192i. 1,413,444. rat-@md Apr. 18, 1922.

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W/T/I/ESSES Tas rara OWEN J. WILLIAMS, or ORGHARDPARK, NEW YORK. 1 .if

sooKETl Wannen.r l

Application filed .Tune 11, 192.1.

To @Zlio/:ofniet may conc-crit.'

Be 1t known that I, OWEN J WILLIAMS, a

, citizen of the United States, and a resident of Orchard Park, in thecounty of Erie 4and State of New York, have invented a new `and ImprovedSocket Wrench, of which Vthe following is a full, clear, and exactdescription.

This invention relates vto improvements insocket Wrenches, of thegeneral character disclosed in my application `forPatent Serial No.410,148, allowed December 16, 1920. An object` of this invention is tolprovide a wrench in which thek jaws are firmly compressed againsttorsional strain, and to provide an improved actuating means for thejaws. Y j A still further object is to illustrate'various slight changesand .improvements inV the wrench which tend to make it more durable andeiiicient in use, Amore simple and practicalfin construction, and tolessen its cost ofmanuifacture.V

With these and other objects 'inrview, the

invention consistsin certain novelfeatures vof constructionl andcombinations and arrangements of parts as will be more fully hereinafterdescribed and pointed out in the A claims. j

In the accompanying drawings 'l Figure l is a view in side elevation ofv'my improved wrench; l Y

Figure 2 is a view in longitudinal section therethrough illustrating thejaws in contracted position; Y v

Figure 3 is a view similar torFigure 2,

illustrating the jaws in expanded position to receive a large sized nut;

Figure 4 is a cross sectional view through the wrench on the line 4 4 ofFigure 2;

Figure 5 is a bottom planview of Figure 3; Y.

Figure 5 is a top plan view of Figure l; Figure 7 is a bottom plan viewof Figure Figure Sis a fragmentary view in section through the casingillustrating a slightlyk modied form of a handle member for operatingthe screw. e

Referring in detail to the drawmgs, l represents a substantiallycylindrical casing, internally screw threaded and reduced at vone end,as indicated at 2, and of the external angular shape at its other end,deslgnated by the reference numeral 3, The angular outer end of thecasing may conveniently re- Specification-of Letters Patent.

Patented pr. :178, 1222.

wrench. screwflts within the upper end of the casing and includes areducedupper end '5, knurledV or milled, as indicated at 6,

-to facilitate the manual adjustment, of the screw 4. Adjacent its lowerend', the screw el includesa reduced lportion 7 and terminatesin anenlargement 8, the screw being formed with aA rounded 'annular shoulder9 between the extremity.

V'Ihe inner lower formed with a reduced portion and itsenlarged ceiveany suitable tool: for turning the end of the casing-fis 7' pluralityofvertical grooves l() extending from the threaded portionV ofrvo thecasing to the rounded ylower edge thereof. 7

A series of jawsV 1l arearranged to `form a socket and eachI jawVincludes van inwardly presented rounded shoulder l2 which fulcruins on-the shoulder 9. The jaws are also formed with outwardlyfpre'sentedcurvedk the grooves v10 and ribs? 13.k fitting within bracing/the jawsagainst torsional strain.

The 'rounded lower edge of the jcasinglf limits the outward'movement ofthe jaws 11.

The jaws preferably include lflat Vfaces 14. adjacent their lowerextremities for thel ac 'commodation 'of a small sized nut and curvedThe operation of the device will Vbe'readily understood. ThespringlSnormally tends to hold the 'inner ends of the j airs together and expandthe'outer Yends vofthe jaws l1 which tlcrum on the shoulder 9. Whenthescrew lis adjusted. the ribs 13 riding in the l j rounded lower end ofthe casing, soi that as f grooves fl() will be iorcedv inwardly lby thethe screw ais moved towardtheY upper end of the casing, the jaws will becontracted.;

It will.be; apparent that the shape of the inner faces ofV thejaws'might be consider'- ably varied to accommodate nuts of variousl sizesand that although I haveV shown a cylindrical casing and a hexagonalsocket, the

shape ofthe casing and' socket and the num# ber of jaws might also bechanged to suit the trade. 1

In FigureS, I have illustrated a slight modification wherein the screwet is provided with a lattened upper end 19 Ai'orniing. a handle memberwhich facilitates the easy manipulation of the screw. 4

In my previousapplication, each jaw in` eluded an angular inner face?adapted to einbrace one corner of a nut. lith the form of device hereinillustrated, each jaw in cludes a flat surface adapted to engage onetia-t face of a nut. This feature, together with the torsional bearingabove described adds greatly to the strength of the wrench.

Tarious slight changes and alterations might be made in the general iormand arrangement of the' parts described without departing from theinvention and hence I do not wish to limit myseltl to the precisedetails set forth, but shall consider myself at liberty to make suchslight changes and ,alterations as fairly ifall within the spirit andscope of the appended claims.

I claim:

l. In a socketwrench, a casing internally screw threaded adjacent oneend, a screw movable in the casing, a shoulder integral with the screw,a plurality or jaws cooperating tofform a socket, shoulders on the jawstulcruming on the first mentioned shoulder, a contraction spring tendingto pull the inner ends of the jaws together and expand the socket. Y n j2. In a socket wrench, a casing internally screw threaded adjacent oneend, a screw movable in the casing, a shoulder integral with the screw,a plurality `of jaws cooperating to form a socket, shoulders on the jawsulcruming on the first mentioned shoulder, a contraction spring tendingto pull the inner ends of the jaws together-and expand the socket,.andmeans for positively limiting the expansion oi' the socket.

3,l In a socket wrench, a casing internally screw threaded adjacent oneend, a screw litting within the casing, said screw including a reducedportion and a shoulder irnmediately below said reduced portion, aplurality of jaws ulcruined on said shoulder and cooperating to form asocket, said casing'having a plurality ot' vertical grooves in itsinnerface, ribs on the jaws located in the groves and bracing the jawsagainst torsional strain.

4. In a socket wrench, a casing, a screw movable longitudinally olf thercasing, a shoulder on the screw, a series of jaws cooperating. to form asocket and mounted to roc-k on the shoulder, and a contraction springembracingthe inner ends oi all the jaws tending to expand the socket.

5. In a socket wrench, a casing screw threaded adjacent one end, a screwin ,the casing, said screw including ,a reduced portion and a roundedshoulder below said'reduced portion, an annular-series ofjawscooperating to form a socket, rounded shoulders onthe jaws rockingonsaid iirst-mentioned shoulder.I the inner ends of said jaws havingnotches therein, an annular contraction spring located in said notchesand tending to, expandvthe socket. A i 6.. In a socket wrench, threadedadjacent one end, a screw in the casing, said screw including a reducedportion and a rounded shoulder below said reduced portion, a pluralityof jaws cooperating` to 'torni a socket, rounded.V shoulders on theVjaws rocking on vsaid first-mentioned shoulder, the inner ends ofsaid'jaws having notches therein, an annular contraction spring locatedin said notches and tending to expand the socket, means whereby movement of the screw in one direction positively contracts the socketagainst the action of the contraction spring.

i' OWEN J. WILLIAMS. 'l

a casing-screw

